Reformatting of anonymous closure is messy.

[schancel]

It would be nice if dfmt maintained the indentation for the following bit of code.

    runTask(() {
    	tasks.each!((task) { 
    		task.join();
    	});
    	exitEventLoop();
    });

-->

    runTask(() { tasks.each!((task) { task.join(); }); exitEventLoop(); });

[WebFreak001]

(still broken with #471)